Congress had repeatedly rebuffed attempts by the executive branch to empower the secretary of the Interior with the ability to designate scenic landscapes as new national parks. But the Antiquities Act’s reference to places with scientific and historical value offered a backdoor means of protecting areas that were really valued for their scenery. And though earlier proposals would have limited national monuments to only 640 acres, the final text had a more flexible provision, referring to “the smallest area” necessary.
Source: Los Angeles Times February 28, 2019 11:03 UTC